Titanic object only partly visible (7)
I believe the answer is:
iceberg
'titanic object' is the definition.
'iceberg' can be an answer for 'object' (iceberg is a kind of object). I'm not certain of the 'titanic' bit.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for iceberg that I've seen before include "smash hit in Titanic?" , "Wrecker of Titanic" , "Large floating mass of frozen water" , "last scene of Titanic" , "One destroyed the Titanic" .)